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公开(公告)号：US10852874B2
公开(公告)日：2020-12-01
申请号：US16677454
申请日：2019-11-07
Applicant: Massachusetts Institute of Technology
Inventor： Takatoshi Yoshida , Hiroshi Ishii
Abstract: An object may rest on top of a sensor structure. Multiple 3-axis load sensors may be embedded in the sensor structure, and may take measurements of a force created by a human user touching the object. The direction of the force may fluctuate slightly, due to tiny shaking movements of the user's hand or finger while the hand or finger touches the object. These tiny shaking movements may occur even in a normal, healthy person. Based on these measurements of fluctuating force that are taken by the load sensors, a computer may calculate three-dimensional spatial coordinates of a point at which the user is touching the object.
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公开(公告)号：US20180154627A1
公开(公告)日：2018-06-07
申请号：US15880537
申请日：2018-01-26
Applicant: Massachusetts Institute of Technology
Inventor： Lining Yao , Wen Wang , Jifei Ou , Chin-Yi Cheng , Guanyun Wang , Hiroshi Ishii , Daniel Wang , Helene Steiner , Clark Della Silva
CPC classification number: B33Y80/00 , B29C64/106 , B29C64/112 , B29C64/20 , B29C64/386 , B33Y10/00 , B33Y30/00
Abstract: A composite film includes a substrate that is not responsive to relative humidity, and also one or more layers of hygromorphic material. The hygromorphic material expands in response to an increase in relative humidity and contracts in response to a decrease in relative humidity. In some cases, the composite film is bi-layer or tri-layer. The composite films are fabricated such that they undergo a desired bending pattern in response to changes in relative humidity. In some cases, these bending patterns are combinations of two bending primitives: a smooth curve and a sharply angled curve. These two primitives are combined to create a variety of shape transformations including 1D linear transformation, 2D surface expansion and contraction, 2.5D texture change and 3D folding. Any type of hygromorphic material may be employed, including living gram positive and gram negative bacterial cells, yeast cells, plant cells, mammalian cells, cell debris, or hydrogel.
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公开(公告)号：US20250136869A1
公开(公告)日：2025-05-01
申请号：US18927122
申请日：2024-10-25
Applicant: Massachusetts Institute of Technology
Inventor： Jack Forman , Ozgun Kilic Afsar , Sarah Nicita , Rosalie Hsin-Ju Lin , Cedric Honnet , Neil Gershenfeld , Hiroshi Ishii
Abstract: Liquid Crystal Elastomer (LCE) fibers, an apparatus for manufacturing, and a method for using the apparatus are provided. LCE fibers formed from each of a plurality of resin recipes can undergo reversible temperature driven actuation of the fiber. Each of the resin recipes forms a fiber having a different actuation temperature. The apparatus includes: an extrusion device, a drawing bobbin, a coating basin, a collector bobbin, a first plurality of curing devices, and a second plurality of curing devices, to transform a resin recipe into a LCE fiber. In operation, the extrusion device extrudes the resin through to the first plurality of curing devices for a partial cure. Once in contact with drawing bobbin the resin is coated in a fluid, and then pull through the second plurality of curing devices for a final cure by collector bobbin, where it can be collected and post-processed.
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公开(公告)号：US20210170391A1
公开(公告)日：2021-06-10
申请号：US17081462
申请日：2020-10-27
Applicant: Massachusetts Institute of Technology
Inventor： Udayan Umapathi , Patrick Shin , Hiroshi Ishii
Abstract: An electrowetting-on-dielectric actuator may include an array of electrodes and a dielectric layer. The actuator may modulate voltage of the electrodes in such a way that time-varying electric fields created by the electrodes cause droplets of liquid to move relative to the actuator. The electric fields may cause the droplets to press up against a bottom surface of the actuator while the droplets are under and touching the bottom surface. The droplets may then be released from the bottom surface and thereby deposited on an object being fabricated. The release of droplets may be repeated, one layer of droplets at a time, to fabricate the object. Multiple actuators may simultaneously organize droplets in layers. A robot may move the actuators, one at a time, into position for releasing the droplets.
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公开(公告)号：US10509559B2
公开(公告)日：2019-12-17
申请号：US15147629
申请日：2016-05-05
Applicant: Massachusetts Institute of Technology
Inventor： Jifei Ou , Gershon Dublon , Chin-Yi Cheng , Liang Zhou , Hiroshi Ishii
IPC: B29C64/386 , B33Y10/00 , B33Y50/02 , G06F3/0488 , B29C64/129 , B33Y30/00 , B33Y80/00
Abstract: A computer produces a digital model that efficiently describes a dense array of many micro-pillars. The digital model achieves this efficiency by describing an entire micro-pillar with only a few parameters. For example, an entire micro-pillar may be described by two of more of the following parameters: height, base thickness, profile and tilt. The computer outputs instructions to fabricate the micro-pillar array, in accordance with the digital model. A 3D printer fabricates the micro-pillar array, based on the instructions. Applying vibration to a directional array of micro-pillars may cause the array of micro-pillars to actuate motion of a passive object that is touching the array. Also, a sensor may measure sounds caused by swipes against a micro-pillar array, and output signals indicative of the measurements. A computer performs a machine learning algorithm that takes the measurements as an input, and classifies the swipes.
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Patent Agency Ranking
公开(公告)号：US20180318826A1
公开(公告)日：2018-11-08
申请号：US15969641
申请日：2018-05-02
Applicant: Massachusetts Institute of Technology
Inventor： Udayan Umapathi , Patrick Shin , Hiroshi Ishii
CPC classification number: B01L3/0268 , B01L2200/0647 , B01L2400/0427 , G01N35/0099 , G01N35/1011
Abstract: An electrowetting-on-dielectric actuator may include an array of electrodes and a dielectric layer. The actuator may modulate voltage of the electrodes in such a way that time-varying electric fields created by the electrodes cause droplets of liquid to move relative to the actuator. The electric fields may cause the droplets to press up against a bottom surface of the actuator while the droplets are under and touching the bottom surface. The droplets may then be released from the bottom surface and thereby deposited on an object being fabricated. The release of droplets may be repeated, one layer of droplets at a time, to fabricate the object. Multiple actuators may simultaneously organize droplets in layers. A robot may move the actuators, one at a time, into position for releasing the droplets.
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公开(公告)号：US10850272B2
公开(公告)日：2020-12-01
申请号：US15969641
申请日：2018-05-02
Applicant: Massachusetts Institute of Technology
Inventor： Udayan Umapathi , Patrick Shin , Hiroshi Ishii
Abstract: An electrowetting-on-dielectric actuator may include an array of electrodes and a dielectric layer. The actuator may modulate voltage of the electrodes in such a way that time-varying electric fields created by the electrodes cause droplets of liquid to move relative to the actuator. The electric fields may cause the droplets to press up against a bottom surface of the actuator while the droplets are under and touching the bottom surface. The droplets may then be released from the bottom surface and thereby deposited on an object being fabricated. The release of droplets may be repeated, one layer of droplets at a time, to fabricate the object. Multiple actuators may simultaneously organize droplets in layers. A robot may move the actuators, one at a time, into position for releasing the droplets.
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公开(公告)号：US20200150814A1
公开(公告)日：2020-05-14
申请号：US16677454
申请日：2019-11-07
Applicant: Massachusetts Institute of Technology
Inventor： Takatoshi Yoshida , Hiroshi Ishii
Abstract: An object may rest on top of a sensor structure. Multiple 3-axis load sensors may be embedded in the sensor structure, and may take measurements of a force created by a human user touching the object. The direction of the force may fluctuate slightly, due to tiny shaking movements of the user's hand or finger while the hand or finger touches the object. These tiny shaking movements may occur even in a normal, healthy person. Based on these measurements of fluctuating force that are taken by the load sensors, a computer may calculate three-dimensional spatial coordinates of a point at which the user is touching the object.
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公开(公告)号：US20190320705A1
公开(公告)日：2019-10-24
申请号：US16504165
申请日：2019-07-05
Applicant: Massachusetts Institute of Technology , Syracuse University
Inventor： Wen Wang , Lining Yao , Chin-Yi Cheng , Teng Zhang , Hiroshi Ishii , Daniel Wang , Daniel Levine
IPC: A23P20/20 , A23L27/00 , A23L5/00 , A23L29/281
Abstract: An edible structure may comprise a gelatin film and fiber strips. The gelatin film may have a higher density of gelatin in a first layer of the film than in a second layer of the film. The fiber strips may be attached to the first layer, and may have an initial orientation, thickness and density. The structure may be configured to undergo a shape transformation when the apparatus hydrates. During the transformation, the film may transform from a flat film into a curved, 3D film. Which specific shape results from the transformation may depend, at least in part, on the initial orientation, thickness and density of the fiber strips. The film may include flavorings or other additives. In some cases, the transformation may change a texture of the structure. In some cases, the transformation may be caused, at least in part, by a change in temperature.
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公开(公告)号：US20180103678A1
公开(公告)日：2018-04-19
申请号：US15787639
申请日：2017-10-18
Applicant: Massachusetts Institute of Technology , Syracuse University
Inventor： Wen Wang , Lining Yao , Chin-Yi Cheng , Teng Zhang , Hiroshi Ishii , Daniel Wang , Daniel Levine
IPC: A23P20/20
CPC classification number: A23P20/20 , A23L5/55 , A23L27/79 , A23L29/284
Abstract: An edible structure may comprise a gelatin film and fiber strips. The gelatin film may have a higher density of gelatin in a first layer of the film than in a second layer of the film. The fiber strips may be attached to the first layer, and may have an initial orientation, thickness and density. The structure may be configured to undergo a shape transformation when the apparatus hydrates. During the transformation, the film may transform from a flat film into a curved, 3D film. Which specific shape results from the transformation may depend, at least in part, on the initial orientation, thickness and density of the fiber strips. The film may include flavorings or other additives. In some cases, the transformation may change a texture of the structure. In some cases, the transformation may be caused, at least in part, by a change in temperature.
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